KR20200043959A - Spanner Having Improved Function for Tightening - Google Patents

Abstract

The present invention relates to a spanner with an improved tightening function and, more specifically, to a spanner with an improved tightening function which can continuously rotate a spanner in a tightening direction without separating the spanner from a bolt or a nut in a tightening process to improve a tightening function. The spanner (10) comprises a head unit (11) to which a fixing means is coupled, a handle (13), and a neck unit (12) connecting the head unit (11) and the handle (13). The head unit (11) includes: a first and a second tightening surface (161, 163) coming in contact with the circumferential surface of the fixing means; a penetration hole (15) formed to be extended from the first tightening surface (161) to the outside; a slider (111) arranged on the penetration hole (15) to be installed to be moved along the first tightening surface (161); an elastic means (112) coupled to one end of the slider (111) to support by elasticity; and a fixing component (113) to fix the other end of the elastic means (112). The first tightening surface (161) includes a first extension portion extended while having a first radius of curvature and a second extension portion extended while having a second radius of curvature. The penetration hole (15) is formed in a direction in which the first extension portion of the first tightening surface (161) is extended.

Description

Spanner Having Improved Function for Tightening

The present invention relates to a spanner having an improved tightening function, and in particular, a tightening function that enables the tightening function to be improved by allowing the spanner to rotate continuously in the tightening direction without separating from the bolt or nut during the tightening process. It is about an improved spanner.

A spanner for fastening a fastening part such as a bolt or a nut may be made of steel or a forging tool, and may include a two-way spanner with fastening parts on both sides and a single-ball spanner with fastening parts on one side. The spanner is formed with a tightening part to meet the specification of a bolt or nut, and thus can be used only for a bolt or nut having a predetermined size. And in the tightening process, it is rotated once in the specified direction, and then the spanner must be separated with a bolt or nut, and then inserted into the bolt or nut to rotate. In this way, the process of separating the spanner from the bolt or nut in the tightening process and inserting the tightening part into the bolt or nut for tightening again may increase the tightening time and reduce work efficiency.

Prior art related to a spanner is Patent Publication No. 10-2006-0058201. In the prior art, the fixing jaw and the moving jaw have a surface facing each other, the surface of the fixing jaw forms an angle of 120 degrees between the upper surface and the lower surface, and a groove is formed for fitting a nut edge to a connection portion between the upper surface and the lower surface, A guide surface for supporting the normal nut is formed on the top of the groove, the guide surface forms a normal tightening section, a locking jaw is formed on the guide surface of the normal tightening section, and one side of the locking jaw forms a support surface while forming a tooth shape and abnormal tightening It is connected to the section, and a groove is formed on the surface of the moving jaw, and a monkey spanner is formed in which a tightening portion is formed under the groove.

Patent Publication No. 10-2009-0126347 is a spanner head portion formed by fixing the lower jaw; It has an upper jaw with a spring inserted in the rear of the spanner head, and the upper and lower jaws are interlocked with the hexagonal head bolts or nuts, and the upper and lower jaws are inserted into the spring according to the changing diameter when rotating between the horizontal surface and the vertex of the hexagonal head. Disclosed is an auto-adjusting universal ratchet spanner that releases and engages a hexagonal head of a bolt or nut to exert a ratchet function while the jaw swings forward and rearward.

Patent Publication No. 10-2014-0062780 relates to a spanner having a structure in which an opening is formed between a pair of fasteners having parallel surfaces with each other, an elastic body embedded in a groove formed at one end of the inner peripheral surface of the opening; And a ball that is installed so that a part of the body is embedded in the groove, and the elastic body functions to push the ball into the opening, thereby preventing the work object coupled to the opening from disengaging. Disclosed is a spanner.

The prior art has the disadvantage that the spanner must be separated from the bolt or nut for each rotation of the spanner, or it is not structurally stable.

The present invention is to solve the problems of the prior art has the following purposes.

Patent Document 1: Patent Publication No. 10-2008-0058201 (Proxen Tools Company Limited, published on June 25, 2008) Monkey Spanner Patent Literature 2: Patent Publication No. 10-2009-0126347 (Kwangmu Kim, December 09, 2009) Automatic adjustment universal ratchet spanner Patent Document 3: Patent Publication No. 10-2014-0062780 (Hyundai Heavy Industries Co., Ltd., published on May 26, 2014) Spanner

An object of the present invention is to provide a spanner having a structurally stable tightening function without a spanner being separated from a nut or bolt for each rotation in the tightening process.

According to a preferred embodiment of the present invention, the spanner is composed of a head unit to which a fixing means is coupled, a handle and a neck unit connecting the head unit and the handle, wherein the head unit comprises first and first contacting the circumferential surfaces of the fixing means. 2 fastening noodles; A through hole formed to extend outward from the first tightening surface; A slider disposed in the through hole and installed to be movable along the first tightening surface; An elastic means coupled to one end of the slider and supported by elasticity; And a fixing part for fixing the other end of the elastic means, wherein the first tightening surface consists of a first extension portion extending with a first radius of curvature and a second extension portion extending with a second radius of curvature. The through hole is formed along a direction in which the first extension portion of the first tightening surface extends.

According to another suitable embodiment of the present invention, a moving groove for guiding the movement of the slider is formed on the first tightening surface, and the moving groove extends as the width and depth decrease from the through hole.

According to another suitable embodiment of the present invention, the slider comprises a cylinder-shaped sliding body, a sliding groove formed on one side of the moving body in the longitudinal direction of the sliding body, and a contact surface formed on the front side of the sliding body.

The spanner according to the present invention enables the productivity to be improved since the spanner does not need to be separated from the bolt or nut in the process of tightening the bolt or nut. In addition, the spanner according to the present invention is structurally stable, so that the durability of the spanner is improved, and the fastening is facilitated.

1A, 1B and 1C show an embodiment of a spanner according to the present invention.
2A, 2B and 2C show another embodiment of a spanner according to the present invention.

The present invention will be described in detail below with reference to the embodiments presented in the accompanying drawings, but the embodiments are intended for a clear understanding of the present invention and the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, and are not described repeatedly unless necessary for understanding of the invention, and well-known components are briefly described or omitted, but the present invention It should not be understood as being excluded from the embodiment.

1A, 1B and 1C show an embodiment of a spanner according to the present invention.

1A, 1B, and 1C, the spanner 10 according to the present invention includes a head unit 11, a handle 13, and a head 13, and a neck connecting the handle 13 to the fixing unit. Consists of a unit (12), the head unit (11) includes first and second tightening surfaces (161, 163) that contact the circumferential surface of the fixing means; A through hole 15 formed to extend outward from the first tightening surface 161; A slider 111 disposed in the through hole 15 and installed to be movable along the first tightening surface 161; An elastic means 112 coupled to one end of the slider 111 and supported by elasticity; And a fixing part 113 fixing the other end of the elastic means 112, wherein the first tightening surface 161 has a first extending portion and a second bending radius extending while having a first radius of curvature. It is made of a second extending portion extending while, the through hole 15 is formed along the direction in which the first extending portion of the first tightening surface 161 extends.

The spanner 10 according to the present invention can be used for tightening or loosening of fastening means such as bolts or nuts and includes a wrench. The bolt or nut can have a variety of dimensions and can have, for example, a hexagonal head with a diameter of 58 mm. However, the spanner 10 according to the present invention can be applied to a polygonal bolt or nut of various standards, and the present invention is not limited to the presented embodiments.

The spanner 10 is a head unit 11 coupled to a fixing means such as a bolt or nut, a handle 13 and a handle 13 and a head unit 11 for rotation of the head unit 11 coupled to the fixing means Can be made of a neck unit 12 that connects. The head unit 11 may be formed on one or both sides of the handle 13. Alternatively, a head unit 11 may be formed on one side of the handle 13, and a head unit 11 or other tool having different specifications may be formed on the other side of the handle 13. The handle 13 or the neck unit 12 may be formed in various structures and the present invention is not limited to the presented embodiment.

Fastening means such as bolts or nuts may be inserted into the head unit 11.

The head unit 11 may have a circular shape in which an insertion part is formed while one part is opened, and first and second fastening surfaces 161 and 163 contacting the circumferential surface of the fixing means may be formed therein and the first fastening Between the surface 161 and the second tightening surface 163, a boundary portion 162 corresponding to a portion where different sides of the bolt or nut meet may be formed. The first tightening surface 161 may extend in a curved shape from one side of the open portion of the head unit 11 and may be smaller than the first extending portion and the first extending portion extending in a curved shape close to, for example, a straight shape. It may be made of a second extending portion extending to the curved surface having a radius of curvature. On the other hand, the second tightening surface 163 may have a planar shape in contact with the circumferential surface of the fixing means such as a bolt or a nut. A contact surface that continuously forms one or more polygons from the second fastening surface 163 to the other end of the open portion is formed to contact the circumferential surface of the fixing means during the tightening or loosening process.

A boundary portion 162 may be formed between the first fastening surface 161 and the second fastening surface 163. The boundary portion 162 may have a fine shape or a wedge shape to the outside connecting the first fastening surface 161 and the second fastening surface 163. In the wedge shape, for example, a first inclined surface is formed outward from the first tightening surface 161, an inclined surface similar to the first inclined surface is formed from the second tightening surface 163, and the first inclined surface and the second inclined surface are formed. It may be a shape connected by a semi-cylinder surface. The first inclined surface and the second inclined surface respectively correspond to different circumferential surfaces of the fixing means, and the semi-cylindrical surfaces can form a clearance.

A through hole 15 may be formed from the first tightening surface 161 to the outside of the head unit 11. The through hole 15 may be formed, for example, along a direction in which the first extension portion of the first fastening surface 161 extends. Specifically, the through-hole 15 may be formed in a shape penetrating outward of the head unit 11 in a direction inclined with respect to the extending direction of the handle 13 from the first fastening surface 161. The through hole 15 may have a linear shape as a whole, and a slider 111 and an elastic means 112 may be disposed therein and sealed by a fixing part 113.

The slider 111 may be installed to move the through hole 15 along the first tightening surface 161 by an elastic means. An induction pin 114 for guiding movement of the slider 111 along the through hole 15 may be installed.

Referring to Figure 1c, the slider 111 is a cylinder-shaped sliding body (111a), a sliding groove (111c) and a sliding body (111a) formed on one side of the moving body (111a) in the longitudinal direction of the sliding body (111a) It may be made of a contact surface (111b) formed on the front of the. The slider body 111a may have a cylindrical shape as a whole, and a sliding groove 111c is formed along the longitudinal direction in the upper portion so that the guide pin 114 can be disposed. The contact surface 111b formed on the front side of the slider body 111a corresponds to a portion contacting the circumferential surface of the bolt during the tightening process. The contact surface 111b may be formed in an inclined shape in a downward direction so as to contact the circumferential surface of the fixing means from the front end of the slider body 111a. The contact surface 111b may be formed in a curved shape extending from the front end of the slider body 111a, and the radius of curvature in the curved shape may be set to be a ratio of 1.0 to 2.0 with respect to the diameter of the through hole 15. . The contact surface 111b may be formed to have the same or similar width in the extending direction, and may extend beyond a portion where the sliding groove 111c starts. Such a structure allows the head unit 11 to be easily rotated when rotated in a direction opposite to the tightening direction while applying a uniform force to the fixing means during the tightening process.

The elastic means 112 may be, for example, a coil spring, and the sliding body 111a may have a structure in which movement can be restricted when the through hole 15 is compressed. The elastic means 112 can have an appropriate modulus of elasticity and the other end can be secured to the fixing part 113. The fixing part 113 is fixed to the end of the through hole 15 so as to be securely fixed to the head unit 11, a fixing body 113a and a fixing hole 113b to which one end of the elastic means 112 is fixed ). The elastic means 112 and the fixed part 113 having various structures can be applied to the elastic movement of the slider 111, and the present invention is not limited to the presented embodiments.

The handle 13 may be extended in a straight shape and connected to the head unit 11 by the neck unit 12. The handle 13 may have a small width compared to the diameter of the head unit 113, and thus the handle 13 may be connected to the head unit 11 in a curved shape. The upper part and the lower part of the neck unit 12 may be connected to curved points at different points of the head unit 11, respectively. In addition, the tightening direction may be from the upper part to the lower part, and the radius of curvature of the upper part may be larger than the radius of curvature of the lower part for tightening and rotational stability in the opposite direction. The neck unit 12 of various shapes can be applied to the spanner 10 according to the present invention and the present invention is not limited to the presented embodiments.

The spanner 10 according to the present invention can be applied to a bolt or nut of various sizes, and can be applied to a bolt or nut having a diameter of, for example, 58 mm. If the nut or bolt according to the present invention is applied to a nut or bolt having a diameter of 58 mm, the width of the inlet portion may be 58.5 to 59.6 mm, and the diameter of the through hole 15 may be 9.5 to 10.5 mm. The guide pin 114 may have a diameter of 3.5 to 4.5 mm, and the circumferential angle formed by the end portion of the second tightening surface 163 from the center line of the through hole 15 becomes 24 to 28 degrees, and the sliding groove 111c ) May have a depth of 3.0 to 3.3 mm. And the radius of curvature of the contact surface 111c may be 13 to 15 mm. If a spanner according to the present invention is applied to bolts or nuts of different sizes, each size can be determined in the same or similar proportions. And the spanner 10 according to the present invention by such a configuration ratio allows the torque to act evenly against the fixing means during the tightening process, and at the same time, the rotation in the opposite direction is made easy.

2A, 2B and 2C show another embodiment of a spanner according to the present invention.

2A, 2B, and 2C, the spanner 20 may be formed of a head unit 21, a neck unit 22, and a handle 23, and an open portion may be formed in the head unit 21 have. An induction face 252 extending in a flat shape may be formed on one side of the open portion, and the first tightening surface may extend from the end portion of the induction face 252. In addition, the boundary portion 251 and the second tightening surface 25 having the same or similar structure as described in FIGS. 1A, 2B, and 1C may be extended, respectively. In addition, a moving groove 26 for guiding the movement of the slider 211 in a direction from the middle portion of the first fastening surface to the guiding surface 252 is formed, and the moving groove 26 has a width and depth from the through hole. As it becomes smaller, it can extend to the induction surface 252. The slider 211 or the through hole may have the same or similar structure to the slider 111 or the through hole 15 described in FIGS. 1A, 1B, and 1C. The moving groove 26 may be formed to have a semi-circular cross-section such that a portion corresponding to half the diameter of the cylinder-shaped slider 211 is in contact.

The guide pin 214 may be disposed in a direction passing through the plane of the head unit 21 and may be cylindrical. Referring to Figure 2b, the guide pin 214 may have a hollow cylindrical shape and the inside may be formed to be a circumferential face 214b of a polygon so that a suitable fixing screw can be fixed. The slider 211 can be made of a sliding body 211a, a sliding groove 211c and a contact surface 211b, similar to the one described above, and the outer surface 214a of the guide pin 214 is attached to the sliding groove 211c. Can be contacted. In the process of using the spanner 20, the slider 211 may be moved in contact with the guide pin 214 disposed in the longitudinal direction of the sliding groove 211c. The induction pin 214 may be made of various structures that can contact the sliding groove 211c, and the present invention is not limited to the presented embodiment.

Referring to Figure 2c, the coil spring 212 of the same or similar shape as in Figure 1c is disposed in the through-hole to restore the slider 211 to a predetermined position and one end of the coil spring 212 is fixed cap 213 ). The fixing cap 213 may have the same or similar structure to the fixing component 113 described above. The fixing cap 213 may be formed of a fixing body 213a, which is a cylindrical shape as a whole, a fixing hole 213b formed inside the fixing body 213a, and a fixing frame 213c. A part of the coil spring 212 may be accommodated in the fixing hole 213b formed in the fixing cap 213, and the fixing cap 213 may be fixed to the head unit 21 by the fixing rim 213c. The fixing hole 213b may be a hole shape having a polygonal circumferential surface, and the coil spring 212 may be stably fixed by the polygonal circumferential surface. The fixing cap 213 may be made in various shapes and the present invention is not limited to the presented embodiment.

The spanner 20 according to the present invention allows the tightening efficiency to be improved by moving the slider 211 during the tightening process. Specifically, when the spanner 20 is rotated in the tightening direction, the slider 211 remains protruded out of the through hole, and when the spanner 20 is rotated again in the opposite direction of the tightening direction, the slider 211 moves through the It can be moved inside. By the first tightening surface becomes a curved surface, the spanner 20 is easily rotated in the opposite direction. In this way, the spanner 20 according to the present invention enables fastening of the fastening means by eliminating the need to separate the spanner 20 from the fastening means during the fastening process of the fastening means.

The spanner according to the present invention enables the productivity to be improved since the spanner does not need to be separated from the bolt or nut in the process of tightening the bolt or nut. In addition, the spanner according to the present invention is structurally stable, so that the durability of the spanner is improved, and the fastening is facilitated.

The present invention has been described in detail with reference to the presented embodiments, but those skilled in the art will be able to make various modifications and modified inventions without departing from the technical spirit of the present invention with reference to the presented embodiments. . The present invention is not limited by such modified and modified inventions, but is limited by the appended claims.

10, 20: Spanner 11, 21: Head unit
12, 22: neck unit 13, 23: handle
15: through hole 26: moving groove
111, 211: slider 112, 212: elastic means
113: fixing parts 114, 214: induction pin
161: first tightening surface 162: boundary
163: second tightening surface 212: coil spring
213: fixing cap 251: boundary portion
252: judo cotton

Claims (1)

In the spanner consisting of a head unit 11 to which the fixing means is coupled, the handle 13 and the neck unit 12 connecting the head unit 11 and the handle 13,
The head unit 11
First and second tightening surfaces 161 and 163 contacting the circumferential surface of the fixing means;
A through hole 15 formed to extend outward from the first tightening surface 161;
A slider 111 disposed in the through hole 15 and installed to be movable along the first tightening surface 161;
An elastic means 112 coupled to one end of the slider 111 and configured to limit movement when the sliding body 111a is compressed along the through hole 15;
A fixing part 113 fixing the other end of the elastic means 112; And
Includes; guide pin 114 for guiding the movement of the slider 111 along the through-hole 15;
The first tightening surface 161 is composed of a first extending portion extending while having a first radius of curvature and a second extending portion extending while having a second radius of curvature, and the through hole 15 has a first tightening surface ( 161) is formed along the direction in which the first extension portion extends,
The second fastening surface 163 has a planar shape in contact with the circumferential surface of the fastening means, and a boundary portion corresponding to a portion where different sides of the fastening means meet between the first fastening surface 161 and the second fastening surface 163 (162) is formed,
The slider 111 includes a cylinder-shaped sliding body 111a, a sliding groove 111c formed on one side of the moving body 111a in the longitudinal direction of the sliding body 111a, and a contact surface formed on the front side of the sliding body 111a. (111b),
A movement groove 26 for guiding movement of the slider 111 is formed on the first tightening surface 161, and the movement groove 26 extends as the width and depth decrease from the through hole 15,
The guide pin 114 is disposed in a direction penetrating the plane of the head unit 21 and has a hollow cylindrical shape and is formed so that the inside becomes a polygonal circumferential surface, and the guide pin 114 is provided in the sliding groove 111c. Spanner with an improved tightening function, characterized in that the outer surface of the cylindrical shape is in contact with the movement of the slider 111 is induced.

Images